A 60-year-old doctor with ties to the Occupy Wall Street move­ment has been charged with possessing a large amount of chemicals commonly used for making bombs and explosive devices, authorities said on Saturday.

The man was arrested following a multiagency investiga­tion, that included the FBI and Bergen County Bomb Squad. Authorities found several chemicals, assault rifles and other weapons in Rivera’s home, Bergen County Prosecutor John Molinelli said.